Key result
Familial vagally mediated complete AV block linked to recurrent syncope promptly reversed by atropine.
Population
2 patients with recurrent syncopal episodes preceded by nausea and vomiting, with normal baseline ECG.
Design
Case_series
Authors
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May support considering vagal AV block in unexplained syncope despite normal studies; leaves open familial prevalence and management.
Case Report (n=2)
Paroxysmal, vagally mediated complete AV block should be considered in patients with unexplained syncope, even when baseline ECG and electrophysiological studies are normal.
Talwar et al. (1985) conducted a case report in Paroxysmal vagally mediated AV block with recurrent syncope (n=2). Paroxysmal vagally mediated AV block was evaluated on Syncope and complete heart block. Paroxysmal vagally mediated complete AV block caused recurrent unexplained syncope in a mother and daughter, with one episode promptly reversed by atropine.
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